Improvement in rubber erasers



G. STABKPULE.

Rubber-Erasers. N0. 144,364. Patented Nov.4\873.

UNI'IED STATES PATENT OFFICE.

GREENLEAF STAOKPOLE, OF ELIZABETH, NEW JERSEY.

IMPROVEMENT IN RUBBER ERASERS.

Specification forming part of Letters Patent N0. 1 4 1,334 dated November 4, 1873; application filet1 April 25, 1873.

T0 all whom z't may concern:

Beit known that I, GREENLEAF STAGKPOLE, of Elizabeth, in Union counuy and State of New Jersey, have invented certain Improvements in Proteeoed Rubber Erasers, of whicl1' the following is a specification:

My invention relates to the eombination and arrangement of a case conta-ining a rubber erase1; my objeet bei11g to produce a protected rubber eraser that can be conveniently carried in the pocket, and. kept free fr0m dirt by being eovered With a case when so earried.

The case is t0 be made by striking up, With dies, 13W0 shells 0f a semicircular form, one 0f which is sma-ller than 1:11e other, so that it will fit nice1y inside of it. The smaller of the shells isto be provided With a rubber 0f a circular form, a little m0re than one-half 0f the rubber being covered by the Shell. The smaller shell is placed within the larger, and a rivet driven through the edges 0f the she1ls, and through the center of the rubber, loose1y enough that the rubber may turn 0,1 be turned. 130 expose a new surface when the 01d is worn also, so thao the shell may"be turned on the rive1: so as t-o entirely cover the rubber, keeping it c1ean when not in use, 0r t0 expose a part of it when wanted f0r use the Whole making a very neat, compaet article, that 02m be carried in the pocket, 2md be a-1way's c1ean zmd ready fo r usfa. Inthe drawing accompanyi-ng, and W1110h 1s a p2ut of this specification, Figure 1 is a s1de VieW 0f my iuvention Wifll the rubber C entire1y qovered, and represented by the dotted lines. D is the rivet whieh holds them 1:0- gether.

Fig. 2 is a side view' 0f my invention wit-h the rubber exposed, ready for use.

Fig. 3 is a cross-seotion of 1ny invent1on, showing the ed ges 0f the she11s A 2u1d B and the ri1bber O.

Having thus deseribed my invention, what I 01a1'1n as new, and desire t0 seoure by Letters Patent, is- 'lhe shells A and B, when provided W1th the rbber O, the Whole being held together by the 1ivet D, substantially as and f0r the purpose Set forth.

GREENLEAF STAOKP OLE. Witnesses:

CHAS. B. BARCLAY, WVM. E. GAVIT. 

